Bulb-support for electric lamps.



C. E. GODLEY.

BULB SUPPORT FOR ELECTRIC LAMPS.

APPLICATION FILED JAN-5,19I6.

Patented Oct. 24, 1916.

ix/g I I 3% c\mcw\ws a.e m\\q W W W r srAT s PATENT OFFICE.

CHARLES eonnnzfor nnrnornmicnrenm assxeivon, BY MESNE'ASSIGNMENTTS, T0 EDMUrIDs a; ONES CORPORATION, OF NEW ,YonK; N. Y., A conrona'rron or NEW YORK.

To all whom it may concern:

Be it knownthat LC-HARLES E. GonLEY,

State of Michigan, have invented .a new and Improved Bulb-Support for Electric Lamps, of which the following is a specification.

.This invention relates to means for securely and non-revolubly .mounting electric bulbs within lamp bodies, and its objectis to provide a supporting device that will be simple, that may be easily removed from the lamp body, and that may be constructed at low cost.

tion of a sleeve connected to any desirable part of the lamp, in which sleeve the bulbsupporting couplingis mounted and which sleeve has an openingin its wall, a coupling normally slidable within the sleeve and provided with a narrow longitudinal groove, and-a spring formed of flat metal and embracing said sleeve and having an inturned portion extending through the opening in the wall of the sleeve so as to engage the coupling and also having its end extending into the groove in said coupling.

In the accompanying drawing, Figure 1 is a central vertical section of a lamp pro vided with this improved bulb supporting device. Fig. 2 is a section on the line 22 of Fig. 1. Fig. 3 is a section through a reflector to which the bulb supporting sleeve is connected, the construction of the sleeve being slightly modified so as to permit the bulb to be moved back and forth in order to focus it. Fig. 4 is a perspective view "of a securing spring. Fig. 5 is a section of the coupling shown in Fig. 3.

Similar reference characters refer to like parts throughout the several views.

In the lamp shown in Fig. 3, the reflector 1 has secured to it a sleeve 2 formed with an opening 3. this sleeve is normally slidable and revoluble a coupling 4 having .a

conductor 5 attached to its outer end in any desired manner, and provided with the usual bayonet slot 6 to receive the pin 7 on the socket 8 of the bulb 9, and a recess 10, preferably in the form of a longitudinal groove 10. A spring 12 of flat metal has a' body portion that tightly embraces the sleeve 2 for nearly one half of its circum-' ference, then an outwardly extending por- Specification of Letters Patent.

I BULB-SUPPORT FOR ,ELEcTnIc LAMPS.

Patented Oct. .24, 1916.

Application filed January 5, 1916. Serial in. 70,360.

,7 tion 13 which permits a tool being inserted to remove the spring, then an inwardly extending portion 14 that extends through the opening 3, and finally an inturned end 15 that enters the recess 10.

The pressure of the portion 14 of the .spring on the coupling 4 prevents this from moving endwise except under considerable stress-and while permitting-the bulb 9 to be focused, holds it in any desired position. The lip 15 extending into the recess 10, limits the endwise movements of the coupling and also prevents 'it from being and can be slipped out of the sleeve 2 in either direction. 7

The .groove 10 may be of any desired length, and in lamps such as shown in Fig.

1, need be no longer than the width of the spring; The coupling there shown is somewhat of the same general character as that shown in Fig. 3', and has a metal shell 16, a body 17 of insulating material in which twometal-sleeves 18 are mountedto receive wires that extend in through the cap 19 screwed onto the lower end of the body 17'. A bulb 21 has a socket 22 extending into the shell 16, and this socket has contacts 23 and 24 engaged by the contact rods 25 that are mounted in the metal sleeves 18 and pressed outward by the springs 26. Neither of these couplings forms any part of the present invention.

The coupling 16 is mounted in the sleeve 27, secured to the lamp body 28, and is formed with a recess to receive the inturned end 15 of the spring 12, as shown in Fig. 2.

Where the metal parts of the lamp and its support are employed as one of the conductors for the current of the lamp, a single contact rod or pin 30 may be employed, as indicated in Fig. 5. The length of the groove 10 and the length of thelip '15 determine the distance the lamp bulb can be moved and where no movement is necessary ing through its wall, a bulb-supporting coupling mounted in said sleeve and provided the combination of 'a'sleeve having an opening through its wall, a bulb-supporting couplln mounted in said sleeve and having a longitudinal" groove.- in its surface, and a spring mounted on said sleeve and having one end extending through the opening in the sleeve into the groove in the coupling to prevent thooupling from turning in the sleeve, said groove being of greater lengththan the width of the sp'ringso as to permit longitudinal movement of the couplingv in the sleeve.

3. In a bulb-support. for-"electric lamps,

an opening through its wall, a cylindrical coupling normally slidable and revoluble in said sleeve and provided with a longitudinal groove, and a spring mountedon the sleeve and consistingof a curved portion embracin'gthe sleeve, an inturned portion extend ing into said openingand engaging the coupling to holdit in position, and a lip on the end of the spring adjacent the inturned portion and extending into said groove to prevent the coupling from turning in the sleeve and to limit its longitudinal movement.' In testimony whereof I sign this specifica-tion.

CHARLES E. GODLEY. 

